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[Launchpad Bug Tracker <555151@xxxxxxxxxxxxxxxxxx>]

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If I open http://technically.us/spde/Fold in firefox and scroll the page
so that the applet scrolls out of view, X11 restarts immediately.
Sometime around this time, a line appears in ~/.xsession-errors that
says:

WARNING: Application calling GLX 1.3 function "glXDestroyPixmap" when
GLX 1.3 is not supported!  This is an application bug!

This may or may not be the cause for the crash, that is documented in
/var/log/Xorg.0.log.old:

Backtrace:
0: /usr/bin/X(xorg_backtrace+0x3b) [0x8133d6b]
1: /usr/bin/X(xf86SigHandler+0x55) [0x80c7d35]
2: [0x76f400]
3: /usr/lib/xorg/modules//libfb.so(fbBltStip+0x73) [0x7dc9e3]
4: /usr/lib/xorg/modules//libfb.so(fbGetImage+0x235) [0x7e17e5]
5: /usr/lib/xorg/modules/drivers//intel_drv.so(uxa_get_image+0x101) [0x3ad951]
6: /usr/bin/X [0x81237e2]
7: /usr/bin/X [0x815492b]
8: /usr/bin/X [0x815556f]
9: /usr/bin/X(Dispatch+0x35f) [0x808d17f]
10: /usr/bin/X(main+0x395) [0x8072515]
11: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6) [0x42bb56]
12: /usr/bin/X [0x80719c1]
Saw signal 11.  Server aborting.

There seem to be at least two bugs here:

- The first is that an undefined function is called, here the culprit
might be one of:

firefox-3.5 3.5.8+build1+nobinonly-0ubuntu0.9.10.1
sun-java6-jre 6-16-0ubuntu1.9.04 	    
sun-java6-plugin 6-16-0ubuntu1.9.04

- The second and more important is the segfault in X possibly related:

xserver-xorg-core 2:1.6.4-2ubuntu4.2
xserver-xorg-video-intel 2:2.9.0-1ubuntu2.1
libgl1-mesa-dri 7.6.0-1ubuntu4

Hardware:

(--) PCI:*(0:0:2:0) 8086:2a02:1025:011f Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller rev 3, Mem @ 0xfc000000/1048576, 0xd0000000/268435456, I/O @ 0x00001800/8
(II) Module intel: vendor="X.Org Foundation"
	compiled for 1.6.4, module version = 2.9.0
	Module class: X.Org Video Driver
	ABI class: X.Org Video Driver, version 5.0
(II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
	i810-dc100, i810e, i815, i830M, 845G, 852GM/855GM, 865G, 915G,
	E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
	965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
	4 Series, G45/G43, Q45/Q43, G41, B43, Clarkdale, Arrandale

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Scrolling applet out of view kills X11 with signal 11
https://bugs.launchpad.net/bugs/555151
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